Savolit Plus is the result of continuous research and the desire to provide the best environmentally friendly products and solutions. Savolit Plus wood wool boards are genuine natural panels and consist of long, strong wood fibres which are mineralised and bonded into panels. The raw timber originates from sustainably managed forests and is PEFC labelled. From production, installation, lifespan and decomposition (recycling) Savolit Plus panels do not pose a risk to the environment. Savolit Plus wood wool boards are 100% recyclable.


Why choose Savolit Plus

  • Higher resistance to moisture and frost
  • Higher flexural strength
  • Higher compressive strength
  • Low environmental impact
  • PEFC certified timber from sustainably managed forests
  • Wide range of panel sizes and thickness

Savolit Plus Applications

  • External cladding of timber frame walls
  • Internal lining of timber frame walls
  • Base Board for plastered ceilings and walls
  • Internal partition walls
  • Carrier board for render
Savolit Plus
Savolit Plus


Savolit Plus compostion

Savolit Plus wood wool boards consist of long strong wood fibres, stabilised by chemical impregnation and bound by cement-binding agent into a compact coherent structure. The mineralisation process strongly increases the fire resistance of wood wool. The compositiion and performance of the boards make them ideal for many different applications in building constructions.

As a result of Plus panels composition, tests have shown that they are unaffected by moisture and frost.

Produced in accordance to standard EN 13168 and are CE marked.

Savolit Plus timber comes from forests certified PEFC that are sustainably managed. PEFC logo


Ecological & health aspects

  • Many sustainable benefits
  • Boards are made of natural materials
  • No waste disposal problem
  • Ideal for buildings comfortable for people sensitive to allergies
  • Recommended for healthy living environments
  • No harmful gases or vapours given off
  • No toxic fumes if burned
  • Diffusion permeable
  • Hygroscopic - levels out humidity level changes
  • Naturally resistant to fungus and insects
Savolit Plus

Technical advantages

  • Unaffected by humidity and frost
  • Durable
  • Non flammable and self extinguishing
  • Thermally insulating
  • Compatible with all normal construction materials
  • High compression resistance and flexural strength
  • Stable
  • Surface offers good mechanical key for renders and plasters
  • Sound absorbing and noise insulating
  • Vapour permeable
  • Easy and safe to handle, cut and work
  • Proven performance in over 80 years in all climates
  • Available in wide range of board sizes
  • Low environmental impact
  • PEFC certified




Technical Data

Property Designation Units Data Standard
Board thickness d (mm) 15 25 35 50 75  
Board length l (mm) 2400
Board width b (mm) 600  
Average Specific Mass   (Kg/m²) 8 11.5 14 18 26  
Declared thermal resistance RD (m²K/W) 0.20 0.35 0.50 0.75 1.15 UNI EN 13168
Declared thermal conductivity λD (W/mK) 0.066  
Bending strength σb (kPa) 1650 2000 1450 1000 650 EN 12089, A
Compressive strength at 10% deformation σ10 (kPa) ≥ 200 ≥ 150 ≥ 150 UNI EN 826
Water vapour diffusion resistance factor   (-) 5 UNI EN 12086
Fire reaction     Euroclass B - s1, d0 UNI EN 13501-1
Thickness tolerance   (mm) +3, -2 UNI EN 823
Width tolerance   (mm) ± 3 UNI EN 822
Orthogonality   (mm/m) ≥ 2 UNI EN 824
Specific heat   kJ/kgK 1.81  
Shear stress resistance   N/mm² 0.28  
Capacity for thermal accumulation   kJm³K 965-628  
Capacity for absorption of room humidity   l/m² 2 - 3.5  
Resistance to water and frost   l/m² No alteration and maintenance of bending resistance after 20 cycles of frosting and defrosting in water  




Dimension tolerances: Slight differences from format cannot be excluded due to the organic nature of wood.

Tolerances according to EN 13168

Store panels in a dry, level place, not directly on the ground and protect from moisture and dust. The packing provided does not provide protection from rain!

Do not stack more than two pallets on top of each other.





Frame Wall & Ceiling Constructions

  1. Interior plaster glass fibre mesh
  2. SAVOLIT Plus board 25 or 35 mm
  3. Plasterboard (alternative)
  4. Vapour check
  5. Frame construction and insulation
  6. SAVOLIT Plus board 50 mm
  7. Sheathing board
  8. Battens (vent cavity)
  9. SAVOLIT Plus board 25 or 35 mm
  10. Exterior render with glass fibre mesh
Savolit Plus Installation Frame Wall and Ceiling



Interior wall and ceiling applications



Savolit Plus Installation Interior Wall and Ceiling




SAVOLIT Plus wood wool boards are installed in a broken bond pattern and fastened to timber structures with timber screws and Savolit washers positioned as shown in the following diagrams.

Savolit Plus Installation

Savolit Plus Installation


Edge Bonding

Savolit Plus Installation Edge Bonding

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